Thread holding and trimming attachment for looms



April 21, 1931. w. J. INGHAMY ET AL 1,802,020

THREAD HOLDING AND TRIMMING ATTACHMENT FOR LOOMS Filed Dec. 7, 1928 2Sheets-Sheet l April 21, 1931- w. .1. INGHAM ET AL THREAD HCJLDIHG ANDTRIMMING ATTACHMENT FOR LOOMS 2 Sheets-Sheet 2 l Filed Deo. '7, 1928 INVNT R5' A TTORN Y `'5120 solution for it.

Patented Apr. 21, 1931 1,802,020

WILLIAM J'. INGHAM .AND J'OSIELPH LAROUCI-I-E, OFr NASHUA, NEWlI-IAMPSIfIIREy i:

STATES PATENT OFFICE f i tenian-An` HOLDING anni TRIMMING ATTACHMENTFon, LooMs Y'Application flied December 7,1928. serial Ne. 324,426.

` This invention relates to mechanisms dehandled-.by the drop boxYcarrying fillingof signed to be used in looms to' hold filling differentcolors. When any shuttle is moved threads on drop box looms when shuttleisV into an idle positioiibythe raising or lower.- lnot-in' operation.Also, to out threadslwhich ing of the box 2 astrand of filling is leftrunT '15 extend loosely from the selvage of the fabric.Y ning from thefell of the goods Ato the'bobbin Q I In weaving pattern fabrics in box.looms in the shuttle that has just been moved intoits the changingofftheshuttles to produce the reidle position. vSuch a strand of fillingis vquired design results inthe formation of loose shown-in Fig. l at* FVVhen-this shuttlelis I loopsof filling attached to the selvage of theagain brought back into working position and K10 fabric atthe-drop boxside of the loom. makes its first pick,the threador yarnF will Q0 Whilemany attempts have been made heretobe looped around the entirewidthof'fabrio foreto out off these' threads or strands of flllwhich has beenwoven in the meantime.A flt ing automatically during the weavingVoperais these loose loops of filling which the mech- Vtion, suchattempts have not met with comanism provided. by the presentr inventionis i115 meroial success, so far as we have been able designed to trimoff. Or," stated more accu- 6.5 to learn, andit is still theusual'practice to krately, the invention' provides a mechanism cut ofi'such loops by hand. which prevents the formation of most of.v these Thepresent invention deals with this probloops. i' Y Iemand aimsto devisealthorough'ly' practical Stated Vbriefly the mechanism shown in- Y.cludes Vmeans for-grippingthe filling thread 70 The nature of theinvention will lbe readily running from' theselvage of the kgoods to theUlldeISvtOOd from lie fllOWing CleSCIiptiOn bobbin in an idle vShuttleandineans4 for sevwhen fread in connection with the accomering thethread so gripped ata point close to panying drawings, andthe novelfeatures the selvage.

i325 will be particularlypointed out in the {ap- VThe mechanismshown inthe drawings for 7? pendedvolaims. grasping and holding the fillingcomprises a In the drawings, i frame piece 6 which is'supported onthelay Figure l is a perspective viewof a meohaandis secured by a bolt 7Fig. 5, to thelay nism embodying this invention; sword 4;. This framepiece includes a mein- F ig. Q'is a perspective view of the cuttingr beror block which is out away or grooved '8 0 mechanism shown in Fig. 1; onits rearward side, as best shown in Figs. Fig 3 is a plan `View ofthemechanism 5 and 6,1;he groeve terminating in @notch 7 Shown in F'g- 1OIgTPPUg the Strand 0f at theforward edge of the part 6. It will fillingt0 be trimmed-0T CUQ'' be observed that thisv grooved member 64`is Fig-4 is l f'qnt eleltlon ofthe mecha" mounted immediately in front of theshuttle msn? show n m Elg 3;. race andlies immediately beside theentrance F1g'.5 1S. a Slde Vlew of the' mehmlsm to the shuttle box.Consequently, whenaJ SIIVCF 1g' 4 and also Shows parto me ay shuttle hasbeenshot through the shed and e v 5 1 into the drop box, and the piel;of lling thus im Flg 6d 1S a fpersptlgrlegv ilng atlig laid in the shedhas been beaten up, the filling 90 glvvlarn ld 5. andc p 4 l at thattime will lie in'y approximately the 7 is a sectional ,view on the line77, posltloi Shown at F Fig 1' H the droppox Fig 4 ,f Y v V. 2 now isoperated to move the s liuttlel into 2.413 Rferring rst to Fig 1, thedrop box Oia, an idle position ythe strand of filling will be '95swungeither up or down past the rearward `b l' 's indicated at 2, the laat o, theY 'laswdiid lati, and the reed at 5, theselparts Sulf 0f th@Part 5,: the d'ectlonlll WhlCh beingconstrueted, arranged and operatedin the filling is in ovecldep-ending uponwhebher the usual manner. As iswell understood by the drop box is raised or lowered.- But the T50 thoseskilled in this art, the several shuttles point where the fillingcrosses the forward 100 edge of the part 6 will still be somewhere inthe notch 7.

Located immediately beside the front face of the part 6 and extendingacross the notch 7 is a gripper or clamping member 8. This memberconsists of a flat strip of resilient metal, preferably toothed on oneedge, as shown at 9, Fig. 4, and provided at its upper end with acylindrical shank portion 10 which projects through a short bracket 11formed on the frame piece 6. This mounting of the gripperl 8 permits itto rock slightly about the axis of the shank 1 0, but it is pressedagainst the front face of the part 6 by a short Hat arm 12 clampedfirmly in a holder 14 which is formed in the frame piece, the free endof this arm being turned backwardly at right angles and provided with areduced tip which enters a slot formed in the gripper 8. A blade 15 isarranged to reciprocate or oscillate into and out of position betweenthe gripper 8 and the front face of the block or extension 6. The bladeis secured by a screw 16 to an arm 17 having a. mutilated gear 18 formedat one end thereof. This arm is secured fast on a rock shaft 2O which issupported in the frame 6 and is encircled by a coiled spring 21. Thespring tends to hold the blade in the position shown in Figs. 5, 6 and 7where the arm 17 rests on a, part of the frame 6 which serves as a stop.The mutilated gear 18 meshes with the teeth of a rack 22 slidablevertically in the frame 6, and the upper end of this rack is arranged t0be engaged by either one of two cams 24--24 formed on the lower side ofay ratchet wheel 25, the teeth 26 of this wheel projecting from itsupper edge. At an intermediate point the wheel is reduced and made ofapproximately square cross section with rounded corners, as indicated at27, Fig. 3, and bars 28`28 are arranged to enga ge this flattenedsection of the wheel, the rearward ends of these bars being pivoted tothe frame at 30--30, Fig. 3, while their forward ends are connectedtogether by a coiled spring 31. The Wheel `is mounted on an uprightshaft which is supported in a bearing formed in the frame 6.

In order to rotate this wheel step by step a awl 32, Fig. l, isadjustably mounted on the horizontal arm 33 of a bell crank leverfulcrumed at 34 on a bracket 35 which is adjustably secured to a part ofthe loom frame, as clearly shown in Fig. 1. This pawl may be adjustedvertically by turning a screw 36, Fig. 1, in or out, this screw beingthreaded through the upright arm 37 of said bell crank lever and bearingagainst the loom frame.

` It will now be clear that when the loom is in o eration the ratchetwheel 25 will be rotate one-quarter turn at each pick. This motion isimparted to the ratchet wheel as the lay swings backward, the movementbeing completed at approximately the time that the lay reaches thebackward limit of its stroke. If this motion occurs at a time when oneof the cams 24 is in position to depress the rack 22 itwill result inraising the blade 15 into approximately the position shown in Fig. 1.Due to the fact that there are only two cams 24 on the ratchet wheel theblade will be operated only on alternate picks, and the ratchet wheel isso set that this operation will occur after each pick in which theshuttle is delivered to the drop box 2. On the other picks the ratchetwheel is simply given an idle quarter turn movement. The arms 28--28 andspring 31 cooperate to prevent any overthrow of the ratchet wheel 25 andto stop its rotative movement at the end of each uarter turn. As thehigh point of one o the cams 24 passes over the upper end of the rack 22the spring 21 immediately acts to snap the blade 15 into its downward orclosed position where it rests between the parts 6 and 8, as shown inFigs. 4, 5 and 6. If when this movement of the blade occurs a strand oflling is positioned as shown in Fig. 1 Where it runs from the selvage ofthe fabric to the bobbin in an idle shuttle in the box 2, the blade willcatch this filling at an intermediate point and force a bight of thefilling between the parts 6 and 8. This action is illustrated in Figs. 4and 7. The yielding clamp or gripper 8 and the block 6 cooperate to gripthis bight of filling securely and to hold it while the blade 15 iswithdrawn from between the gripping members to make its next stroke.This gripping'action of the parts is facilitated by the yielding orresilient character of the gripper 8 and by the fact that it is sosupported that it can rock about a longitudinal axis and thus adjustitself either to the blade 15 or to the face of the part 6. Eachsucceeding stroke of the blade forces the bight of the filling farther'between the gripping members 6 and 8 until the end of the bight haspassed beyond the teeth 9 on the gripper 8, thus positively preventingany possibility of withdrawing the filling by a movement toward theright, Fig. 4.

While the filling is held gripped in the manner just described, it issevered from the selvage of the fabric at a point close to the selvage.This severing or cutting operation can be performed by any suitablemechanism. The drawings show a temple cutter of an unique form used forthis purpose. Referring to Figs. 1 and 2 the housing or casing for thetemple will be observed at 40, the bracket which supports the temple at41, and the stationary holder in which the bracket is mounted will beseen at 42. The bracket is provided with the usual plate 43 to be struckby the lay during its beat-up movement, the bracket bein g slidablymounted in the holder 42 in the usual manner. Supported on this bracketis a cutter of a type similar to a barbers clippers. That is, itcomprises a Series lli of stationary teeth 'or cutters-44nd acooperating series of movable teeth 45,the1two series-of teethbeinglield togethorinshearing' relationship. A Themovable teeth arecarried by a cutter head pivotedV on the stud 46, Fig. 2', yandprovidedwitha shank 47 which is located immediately beside and slightlyin advance of the plate 43 sothat it will be struck by the lay ij ustbefore the lay comesin contact with the plate 43 to operate the temple.The inovementso imparted to the arm 47 is sufficient to give the movableteeth 45 their cutting stroke. A spring coiled about the rod 48 returnsthe arm 47 and teeth 45 to their initial positions as soon as the arm isreleased by the lay. This cutting mechanism thus operates immediatelybeside the selvage and has a rather' wider range of action verticallythan the ordinaryl temple cutter. f

Assuming that a strand of lilling'has been gripped by the blade l5 andthemembers 8 and 6 which cooperate therewith, and that; it is being heldby the latter members substantially7 as shown at F in F ig. 1, it willbe clear that this strand will be anchored in the cloth at a pointimmediately in frontof the selvage cutter 44-45. cloth as the loomcontinues to operate will, after a very few picks, result in carryingthis strand into the range of operation ofthe cutter which will sever itfrom ythe fabric. The

length of filling between the gripping parts 6', 8 and the selvage ofthe goods will simply drop down into a position entirely out of the wayof the operating mechanism. The gripping devices, however, will continueto liold tween the gripping devices.

the filling indeinitely providing thev idle shuttle remains in the dropbox, each closing of the blade l5 serving simply to crowd a Very shortadditional length of the filling in be- Consequently, when the idleshuttle which carries the filling is again brought into operation andstarts on its Hight through the shed, the end of the filling will beproperly gripped to cause the filling to be laid in the shed. If theshuttles are being changed very frequently, loops of filling may beformed with bothV ends anchored in the selvage, the loose part of theloop being held by the parts 6, 8 and 15 so that the anchored ends willbe severed. Unless, however, the

shuttle changes are quite frequent the4 formaltion of loops will beprevented.

- of its flight through the shed.

It will thus be evident that the invention The takeup inoveinent'of theprovides/,an entirely automatic mechanism y for vtrimming the loosethreads from the sellthe part of the machine attendant other than tokeepitproperly lubricated. As the looin `continues to operate the severedthreads drop clear ofthe machine and no trouble is experienced by the@device loading up or clogging.

,. Whil'ewe have herein shown and described aA preferred embodiment ofour invention lit will be understood that the invention may be 'Aembodied in other forms without departing from `the spiritor` scopethereof.

`Having thusdescribed our invention, what -we'desire to claim as new is:v. y1. In a kbox loom, the combination of means mounted on .thelay'offthe loom for gripping 'a strand-of filling running fromtheselva'ge ofthe fabric tothe bobbin inf an `idle shuttle in the dropbox, mechanism for utilizing the motion of the lay Vto operate saidmeans, and mechanism for severing the strandof filling so gripped closeto the selvage ofthe goods.

f2.` In ya box loom, the combination of means inountedon the'lay of theloom for gripping -a strand of-filling, mechanism for supporting saidmeansin'position'for engagement with the. fillingsrlunning from theselvage of `the fabric to a shuttle thrown out of action at the boxside'fofftlieloom, `mechanismfor opv eratngsaid means immediatelyfollowing each pickk onlyin which the shuttle is dev f livered to thebox side of the loom, and mech- -anism for .severing the filling sogripped at a point close to the selvage.`

'3. Ina'box loom, the combination of relatively movable parts mountedonithe lay'of vthe loom foi-gripping and holding a strand of'lillingatapoint between the selvage'edge of thefabric and an idle shuttlein thedrop .mechanism Ifor operating one of said parts to give it a?grippingfmovement between the time that the working shuttle starts fromtthey box sideof theloom on it'sliig'ht through the shed and returnsagain to the boxfand nie'anslfor cutting the strand so gripped at aipointfclose to the selvage of the goods.

- 4. In abox loom, the combination of relatively niovable parts mountedon the layof the loom for'gripping and holding a strand of fillingata-point between theselvageedge of the fabric 4and an idle shuttle inthe drop box, mechanism for `operating one of said parts to 'give it agripping movement while vthe 'lay is at the backwardv part of its strokeand immediately after the working shuttle has lef-t the box side of theloom on its flight IVA125 throughth'e'shed, andr means for severing the:strand iso'gri'pped ata'point close to the lselvagge ofthe goods.

5. In a box loom, theA combination of parts mounted on the lay of theloom for gripping and holding a strand of filling, a blade cooperatingwith said parts to force a bight of filling into gripping relationshipto said parts, mechanism for operating said blade to cause it to engagea strand of filling running from the selvage of the goods to an idleboxed shuttle, and mean-s supported on the breast beam for severing thestrand of thread so gripped at a point close to the selvage of thegoods.

6. In a box loom, the combination of parts for gripping and holding astrand of filling, a blade cooperating with said parts to force a bightof filling into gripping relationship to said parts, means mounted onthe lay of the loom for supporting said parts and said blade, mechanismfor utilizing the movement of the lay to operate said blade and to causeit to engage a strand of filling running from the selvage of the fabricto an idle boxed shuttle, and mechanism for cutting said strand at apoint close to the selvage of the oods.

k7. In a box loom, the combination of relatively ielding parts forgripping and holding a ight of filling, a reciprocating blade` coorating with said parts to force a bight of lling between them, meansmounted on the lay of the loom for -supporting said parts and saidblade, and mechanism for utilizing the movement of the lay toreciprocate said blade.

8. In a box loom, the combination of relatively yielding parts forgripping and holding a. bight of filiing, a reciprocating bladecooperating with said parts to force a bight of filling between them,means mounted on the lay of the loom for supporting said parts and saidblade, and mechanism for operating said blade including a cam and a paWland ratchet mechanism arranged to be operated by the motion of the layfor giving said cam its operative movement.

9. In a box loom, the combination of relatively yielding parts forgripping and holding a bright of filling, a reciprocating bladecooperating with said parts to force a bight of filling between them,said parts being constructed to prevent any substantial Withd rawalmovement of the filling with the blade, means mounted on the lay of theloom for supporting said parts and said blade, and mechanism foroperating said blade including a spring for closing the blade, a cam foropening it, and means for utilizing the motion of the lay to operatesaid cam.

10. In a box loom, the combination of means mounted on the lay of theloom for gripping a strand of filling extending from the selvage of thefabric to the bobbin in a boxed shuttle at the box side of the loom,said means comprising relatively movable thread ripping parts located infront of the path o travel of the Working shuttle, and

